I am going to replace mine for the second time and have only 6800 miles on the bike (speedmaster). I do not beat on ol speedy so i dont understand why they keep going bad so fast. I must have a good half inch of play again. On the up side im still under warranty but i understand these are about $75.00 or better for new ones and my warranty is almost up and i do not want to buy new ones every 3000 miles. So anyone have any info on whats up with these darn things (dealer just looks at me stupid) not many answers there. Has this been a big problem with other speedmasters or has anyone been checking, just grab the back sprocket with the bike in N and move it back and forth if it moves a lot its no good. I do not hear of this with other brands of bikes these never let go in other bikes ANYWAY whats up anyone know Thanks Duane